Hettich EBA 200, Инструкции по ремонту

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10.3 Motor (M1) / speed sensor (B1) / rubber/metal bearing
After disconnecting the centrifuge from the mains, wait for at least 2 minutes until the intermediate circuit
capacitors of the frequency converter have discharged.
•
Remove the centrifuging chamber; see pg. 53, chapter 10.2.
•
Remove the cable fastening of the speed sensor (B1) from the base plate (for EBA 200 only).
•
Unplug plugs S101 and S602 / S504 from the electronics (A1). For the plug positions, see pg. 60, chapter 12.2.
Plug S602: EBA 200
Plug S504: EBA 200 S, HAEMATOKRIT 200
•
Loosen the three fastening nuts of the motor (pg. 50, Fig. 1, h
⏐
pg. 51, Fig. 2, h
⏐
pg. 52, Fig. 3, h) and remove.
•
Unplug the motor's grounding cable and remove the motor (pg. 50, Fig. 1, item 9
⏐
pg. 51, Fig. 2, item 9
⏐
pg.
52, Fig. 3, item 9) from the centrifuge.
•
Screw the speed sensor (pg. 50, Fig. 1, item 10
⏐
pg. 51, Fig. 2, item 10
⏐
pg. 52, Fig. 3, item 10) off from the
bottom of the motor (two screws for the EBA 200 and three screws for EBA 200 S, HAEMATOKRIT 200, see pg.
50, Fig. 1, j
⏐
pg. 51, Fig. 2, j
⏐
pg. 52, Fig. 3, j).
•
Before installing the motor, check the three rubber/metal bearings (pg. 50, Fig. 1, item 12
⏐
pg. 51, Fig. 2, item
12
⏐
pg. 52, Fig. 3, item 12) for any wear or cracks and replace them, if necessary. If a rubber/metal bearing is
damaged, all three rubber/metal bearings have to be replaced. To replace the rubber/metal bearings, screw them
out of the base plate.
When installing the rubber/metal bearings, make sure that there is an anti-twist device (pg. 50, Fig. 1, item 13,
14
⏐
pg. 51, Fig. 2, item 13, 14
⏐
pg. 52, Fig. 3, item 13, 14) on both sides of the rubber/metal bearing in order
to prevent it from twisting during installation.
The anti-twist devices above and below the rubber/metal bearing are different.
•
The rubber/metal bearing, the speed sensor and the motor are installed in the opposite order.
Make sure that all plugs are plugged in again and all cables are fastened where they should be. For the
plug positions, see pg. 60, chapter 12.2.
•
After installing the motor, the imbalance switch-off must be checked; see pg. 33, chapter 7.4.2.
10.4 Holder with magnet on the motor
•
Remove the upper housing part; see pg. 53, chapter 10.1.
•
Screw the holder (pg. 50, Fig. 1, item 11
⏐
pg. 51, Fig. 2, item 11
⏐
pg. 52, Fig. 3, item 11) off of the motor.
•
The holder is installed in the opposite order.
The holder must be placed in such a way that the magnet is located directly above the hall sensor.
•
After installing the holder, the imbalance switch-off must be checked; see pg. 33, chapter 7.4.2.
10.5 Lid lock (A4)
•
Remove the upper housing part; see pg. 53, chapter 10.1.
•
Unplug plug S104 from the electronics (A1). For the plug position, see pg. 60, chapter 12.2.
•
Remove the cable fastening of the speed sensor (B1) from the lid lock cable (for EBA 200 S, HAEMATOKRIT
200 only).
•
Screw the two fastening screws of the lid lock (pg. 50, Fig. 1, d
⏐
pg. 51, Fig. 2, d
⏐
pg. 52, Fig. 3, d) from the
centrifuging chamber.
•
Exchange the lid lock (pg. 50, Fig. 1, item 7
⏐
pg. 51, Fig. 2, item 7
⏐
pg. 52, Fig. 3, item 7).
•
The lid lock is installed in the opposite order.
Before tightening the two fastening screws of the lid lock (pg. 50, Fig. 1, d
⏐
pg. 51, Fig. 2, d
⏐
pg. 52, Fig.
3, d) make sure that the locking tab on the lid (pg. 50, Fig. 1, item 1.2
⏐
pg. 51, Fig. 2, item 1.2
⏐
pg. 52,
Fig. 3, item 1.2), moves centred into the lid lock when the lid is locked, and doesn't scrape on the housing
of the lid lock.
Make sure that all plugs are plugged in again and all cables are fastened where they should be. For the
plug positions, see pg. 60, chapter 12.2.